Hi,
Welcome to health care magic,
I have read your query and understand your concern.
As you have mentioned you have swollen right arm with black and blue spots on the biceps which could be related to your shoulder or arm injury.yes,there may be possibility of muscle tear in your shoulder blade.
Here, I would like to know that whether you have any history of
diabetes or
thyroid illnesses or any injury to that joint.
There could be several causes of this injury or
bruise such as
rotator cuff injury or tear or rotator cuff
tendinitis (inflammation of its tendons).
The initial treatments for all these are,
1. Avoid repetitive overhead activities
2. Do not carry any heavy object or bag on affected shoulder or arm.
3. Apply ice packs for about 15 minutes twice or thrice daily.
4. If you have learned how to do shoulder and arm exercises then continue with that it's could be effective .
5. Apply
diclofenac based topical ointment which is more effective than
paracetamol based.(available over the counter)
6. Can take oral pain killers if pain is very severe.
If still pain over muscles, then proper examination of shoulder joint with right arm is required to find the exact cause and if needed x ray and MRI should be done.
You can consult nearby doctor or orthopedician who can write X-ray and MRI of the shoulder after taking complete history and thoroughly clinical examination.
Hope this information will help you.
Thanks and Regards,